fopen() returning a NULL pointer, but the file definitely exists

Question

The code I have is as follows:

FILE *txt_file = fopen(\"data.txt\", \"r\");
if (txt_file == NULL) {
    perror(\"Can\'t open file\");
} 

Th

Answer 1

Standard problem. Try

FILE *txt_file = fopen("C:\\SomeFolder\\data.txt", "r");

I.e. try opening it with the full absolute path first ; if it works then you just have to figure out what the current directory is with _getcwd() and then fix your relative path.